The 1947 - Present Chevrolet & GMC Truck Message Board Network - A real Unicorn, Finally 71' Cheyenne Super SWB BB

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The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)

- The 1967 - 1972 Chevrolet & GMC Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=3)

- - A real Unicorn, Finally 71' Cheyenne Super SWB BB (https://67-72chevytrucks.com/vboard/showthread.php?t=444027)

special-K

02-03-2011 11:10 PM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

I always figured GM went from 396 to 402 for the same reason they took the 283 to 307 and the 327 to 350. For that matter,in cars,the 427 to 454.

Zoomin

02-03-2011 11:15 PM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

Another angle is that the bore was increased to help make up the loss of power due to the drop in compression, all part of the new science in meeting the new emissions requirements.

special-K

02-04-2011 08:06 AM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

Quote:

Originally Posted by Zoomin (Post 4460820)

Another angle is that the bore was increased to help make up the loss of power due to the drop in compression, all part of the new science in meeting the new emissions requirements.

That's was always my understanding...with all the V8s. I always figured they called the 402 a 400 for the same reason they round off all the motor displacements. They didn't offer the 400 SBC in trucks and maybe they underestimated the confusion it would bring later.

no moa

02-04-2011 10:01 AM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

Great truck!

So in all this reading, i'm guessing my chances of finding a real SWB BB truck for under 10k is going to be inpossible? Darn!

too much stuff

02-04-2011 10:08 AM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

Quote:

Originally Posted by BLACK AND BLUE 67-72 (Post 4459939)

And just because it doesn't have an SPID dosen't mean it's not the real deal! I've got two 67's that look like there has never even been an SPID stuck on them, original paint and no old adhesive anywhere to be seen. ;)

I have seen alot of 67s and a few 68s that never had a spid. I am not sure why. I think every truck after 69 got one regardless of the number of options.

special-K

02-04-2011 10:08 AM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

Not impossible,but in nice condition you'd be lucky.

Duncan and son

02-04-2011 10:32 AM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

Quote:

Originally Posted by too much stuff (Post 4461556)

I have seen alot of 67s and a few 68s that never had a spid. I am not sure why. I think every truck after 69 got one regardless of the number of options.

Eric, I think the earlier ones were just paper and over a period of time they faded beyond recognition or came off while the later ones were covered with a clear adhesive.

yote1234

02-04-2011 11:03 AM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

sure am getting an edu-ma-kation here !!!!

Kiamichi Kid

03-22-2011 05:01 PM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

I thought in 1971 it would have a steel floored bed instead of wood.

DANTIP

03-22-2011 05:03 PM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

Wood floor was an option until '72. Should be listed on the SPID as "E81 FLOOR BOARD".

Flint70step

03-22-2011 05:27 PM

Re: A real Unicorn, Finally 71' Cheyenne Super SWB BB

I would give my left ANYTHING for that sweet truck.Thanks for the pics.Yall be good:chevy:

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